How do I get network helper to talk to my clone

I can't persuade 'Network helper' to recognise my custom image and update the network settings even though the image was created from a Linode stock Distribution of Debian 10.
If manually alter /etc/network/interfaces & resolve the new image works fine but the whole reason I am trying to create a custom image is to simplify and accelerate the process of creating new Linodes rather than having to run stack-scripts and making manual interventions. (Nvidia GPU driver installs can eat a lot of precious GPU time!)
I have done everything I can think of to fix this problem including modifying the Label and Disk UUID to match that of the original drive. I even changed the names of the disks within cloud manager eg 'sda=Debian 10 Disk'.
Have I missed something obvious or is this still part of the 'Custom Images' work in progress.

Thanks